Cal. Gov. Code § 8670.8.5

The administrator may use volunteer workers in response, containment, restoration, wildlife rehabilitation, and cleanup efforts for oil spills in waters of the state. The volunteers shall be deemed employees of the state for the purpose of workers’ compensation under Article 2 (commencing with Section 3350) of Chapter 2 of Part 1 of Division 4 of the Labor Code. Any payments for workers’ compensation pursuant to this section shall be made from the Oil Spill Response Trust Fund created pursuant to Section 8670.46.